Indeed, in the first place, I did wonder what curiosity I found last week. Some torture tools for Geishas that cannot use ordinary pillows to keep their hairdressing intact. Maybe it is related to the French guillotine, I thought jokingly.
We have an original head therapy pillow by Mitsukoshi here. It has a distinctive design with a series of raised bumps or nodules. The pillow is made from ceramic.
The patent number 794011 is associated with its unique design and functionality. The Mitsukoshi brand logo is visible on the pillow. This type of pillow is likely used for therapeutic purposes, possibly to provide support and relief to the head and neck.
Bottomline:
I am still afraid to test the item.
Additional Details
Artist/Creator/Factory: Mitsukoshi (probably the Department Store)
Dimensions: Height 11,5 cm, Length 18 cm, Depth 10 cm
Material: Ceramic
Year: Vintage; the Patent Number seems to disclose that Mitsokoshi registered the patent in 1979
Origin: Japan